18.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of SydneyAU578 papers
- Australian National UniversityAU542 papers
- Commonwealth Scientific and Industrial Research OrganisationAU329 papers
- Centre National de la Recherche ScientifiqueFR319 papers
- Macquarie UniversityAU309 papers
- Data61AU268 papers
- University of CambridgeGB253 papers
- Australian Astronomical ObservatoryAU246 papers
- Centre for Quantum Computation and Communication TechnologyAU243 papers
- Australian Defence Force AcademyAU233 papers
- ARC Centre of Excellence for All-sky AstrophysicsAU232 papers
- Swinburne University of TechnologyAU209 papers
8 papers · 2 filters
Thermodynamics of a one-dimensional S=1/2 spin-orbital model
J. Sirker
The thermodynamic properties of a one-dimensional model describing spin dynamics in the presence of a twofold orbital degeneracy are studied numerically using the transfer-matrix r…
Quantum lattice dynamical effects on the single-particle excitations in 1D Mott and Peierls insulators
H. Fehske, G. Wellein, G. Hager +2
As a generic model describing quasi-one-dimensional Mott and Peierls insulators, we investigate the Holstein-Hubbard model for half-filled bands using numerical techniques. Combini…
Superconducting Spiral Phase in the two-dimensional t-J model
Oleg P. Sushkov, Valeri N. Kotov
We analyse the t-t'-t''-J model, relevant to the superconducting cuprates. By using chiral perturbation theory we have determined the ground state to be a spiral for small doping δ…
Criticality in coupled quantum spin-chains with competing ladder-like and two-dimensional couplings
Pinaki Sengupta, Weihong Zheng, Rajiv R. P. Singh
Motivated by the geometry of spins in the material CaCuO, we study a two-layer, spin-half Heisenberg model, with nearest-neighbor exchange couplings J and α*J along the two…
Dynamical Structure Factor for the Alternating Heisenberg Chain: A Linked Cluster Calculation
Chris J. Hamer, Weihong Zheng, Rajiv R. P. Singh
We develop a linked cluster method to calculate the spectral weights of many-particle excitations at zero temperature. The dynamical structure factor is expressed as a sum of exclu…
A closer look at symmetry breaking in the collinear phase of the Heisenberg Model
R. R. P. Singh, W. Zheng, J. Oitmaa +2
The large limit of the square-lattice Heisenberg antiferromagnet is a classic example of order by disorder where quantum fluctuations select a collinear ground stat…
Long Range Dynamics Related to Magnetic Impurity in the 2D Heisenberg Antiferromagnet
O. P. Sushkov
We consider a magnetic impurity in the two-dimensional Heisenberg antifferomagnet with long range antiferromagnetic order. At low temperature the impurity magnetic susceptibility h…
Two-Component Scaling near the Metal-Insulator Bifurcation in Two-Dimensions
D. J. W. Geldart, D. Neilson
We consider a two-component scaling picture for the resistivity of two-dimensional (2D) weakly disordered interacting electron systems at low temperature with the aim of describing…